I have an old Galaxy Ace II with no installed ROM and stock recovery, and I am trying to put a custom recovery/ROM on it but all I can find is flashable zips intended for flashing in recovery. I cannot transfer them to the phone as
adb reports the filesystem as read-only (
adb shell tells me the shell doesn't exist).
I don't know whether what I'm trying to do is possible, I don't know if I'm being stupid, but is there a way of transferring or flashing the zips in download mode using Odin/Heimdall, or is it possible of transferring the files to the phone any other way?
EDIT: Recovery download